I am so sorry to hear about your sister. Words can't express how I feel. You are a wonderful sister to be helping her through this ordeal.
I just wanted to say that I had an RC in Sept. and had to have a "bag" because of colitis of the colon. I am completely happy with it and it should not be concern for your sister. In fact, knowing the pros and cons of all the diversions, I would choose the bag. Yes, there is something unnatural on your stomach but I adjusted immediately. I can empty anytime, anyplace without catheters to carry around. I never think about it anymore, only every 4 days when it is time to replace the bag and that only takes about 10 minutes, max. There is no leakage and no cold toilet seats to sit on. I have had a couple of bag leaks in the beginning but once you find one fitted to you, it is not much of a problem.
Balihigh